<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>处理失败</title>
</head>
<body>
    <div th:if="${errorMsg != null}" th:text="${errorMsg}"></div>
    <div th:if="${errorMsg == null}">请求失败</div>
</body>
</html>